International Business Machines Corporation
System for responding to complex user input queries using a natural language interface to database

Abstract:

A system for responding to natural language medical queries is provided. The system includes a memory storing a computer program and a processor configured to execute the computer program. The computer program decomposes an input medical related user query into medical related sub-queries using pre-defined proxies, rephrases the sub-queries into yes-no queries answerable with a yes or a no, extracts feature values from the yes-no queries and a relational database storing clinical records, generates a feature vector from the extracted feature values, and applies the feature vector along with desired output labels to a supervised machine learning algorithm to generate a classifier configured to answer a new medical related user query.